Which of the following is an example of a real time operating System?
Answer: A
A process control system is a real-time operating system.
A real-time system must respond within a guaranteed time, because a late answer in controlling a chemical plant or an aircraft is as bad as a wrong one. General-purpose systems such as Windows offer no such guarantee.
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What is the term to ask the computer to put information in order numerically or alphabetically?
Answer: D
Putting information in numerical or alphabetical order is sorting.
Every spreadsheet and database offers it, ascending or descending, on one field or several. The efficiency of sorting algorithms is one of the classic subjects of computer science.
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Who is also known as Father of Computer ?
Answer: A
Charles Babbage is called the father of the computer.
He designed the Difference Engine in 1822 and then the Analytical Engine, which had a store, a mill, punched-card input and conditional branching - every element of a general-purpose computer, a century before one was built.
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Which of the following is operating system for mobiles?
Answer: C
Android is a mobile operating system.
Google acquired it in 2005 and released it in 2008. Built on the Linux kernel and given away free to manufacturers, it now runs on about 70 per cent of the world's smartphones.
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The "home page" of a web site is:
Answer: C
The home page of a website is its first page - the one a visitor arrives at by default.
It usually carries the main navigation, from which the rest of the site is reached. It is the file the server returns for the bare domain name.
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Which is NOT an acceptable method of distributing small power outlets throughout an open plan office area?
Answer: D
Extension cords are not an acceptable way of distributing power in an open-plan office.
They are a trip hazard, are easily damaged and overloaded, and are meant for temporary use only. Power poles, skirting trunking and flush floor ducts are the proper permanent methods.
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What is the average power (in watts) used by a 20 to 25 inch home color television...?
Answer: A
A 20 to 25 inch colour television draws about 70 to 100 watts.
Most of it goes to the electron gun and the deflection circuits. A modern LED set of the same size uses a fraction of that.
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What do we call a network whose elements may be separated by some distance? It usually involves two or more small networks and dedicated high-speed telephone lines.
Answer: C
A network whose parts may be separated by great distances is a wide area network.
A WAN links two or more local networks over leased lines, microwave or satellite. The internet is the largest WAN of all.
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The operation is specified by a binary code known as the -
Answer: D
The operation in an instruction is specified by the opcode.
The operation code says what to do - add, load, jump - and the rest of the instruction says what to do it to. The number of bits in the opcode limits how many distinct instructions the processor can have.
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In which condition resource is not removed from a process holding ?
Answer: D
Under non-preemption a resource cannot be taken from a process holding it.
It is one of the four Coffman conditions for deadlock, with mutual exclusion, hold and wait, and circular wait. All four must hold at once for deadlock, so breaking any one prevents it.
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